Battery and device comprising same

A battery, comprising:

• an electrode assembly, a first packaging layer, and a second packaging layer;
• the electrode assembly comprising a first electrode plate, a separator, and a second electrode plate disposed in a stack, the separator being disposed between the first electrode plate and the second electrode plate;
• the first electrode plate has at least two first coating areas and at least one first empty foil area, wherein one first empty foil area is disposed between two adjacent first coating areas;
• the second electrode plate has at least two second coating areas and at least one second empty foil area, wherein one second empty foil area is disposed between two adjacent second coating areas;
• the at least two first coating areas and the at least two second coating areas overlap each other to form a coating portion of the electrode assembly;
• the at least one first empty foil area and the at least one second empty foil area overlap each other to form a flexible portion of the electrode assembly;
• the first packaging layer is coated on the coating portion and the flexible portion of the electrode assembly;
• and
• the second packaging layer is coated on at least the first packaging layer on the flexible portion.